CP described the change as an “exceptional and temporary” measure but did not specify when the transitional arrangements would end. Since July 2013, the Celta train has been jointly operated by CP and Spain’s Renfe, linking Vigo and Porto with stops at Valença, Viana do Castelo, and Nine.

From 17 August, the section between Porto-Campanhã and Viana do Castelo will be served by CP’s UTE 2240 electric railcars, while Renfe’s UTD 592 railcards will continue to operate between Viana do Castelo and Vigo. CP assured that no trains will be cancelled and the service will continue with the transfer in place.

CP did not explain why two different types of railcars will be used or why the transfer is necessary.

The Communist Party (PCP) of Viana do Castelo has questioned the government on how it plans to support CP in modernising its rolling stock to meet growing demands for national and international rail improvements amid major infrastructure investments.

The PCP noted the Porto-Vigo route currently runs two daily trains operated with Renfe’s older UTD592 railcars leased to CP. These vehicles were heavily repaired before entering service but have ongoing issues. CP is responsible for routine maintenance.

According to reports, these railcars are now reaching mileage limits and require costly overhauls in Spain, with no agreement between CP and Renfe on who pays.

Therefore, Renfe railcars will run between Vigo and Viana do Castelo, while CP railcars will cover the route from Viana do Castelo to Porto.

Since 2013, the Celta service has cut journey times from over three hours to two hours and 15 minutes for the 175-kilometre route.